There is not enough information in your post. Please provide as many answers to below questions as possible.
What is the IP of the PVE server?
What is the IP of your workstation?
What is the IP of your gateway?
Can you ping the PVE server?
Can you ssh into PVE server?
What is the output of "ip a" on PVE?
What is the corresponding output from your workstation? (ipconfig /all ; ip a)
What is the output of "curl -k https://127.0.0.1:8006" when run directly from PVE (over SSH or physical console)?
What is the output of "curl -k https://LAN_IP:8006" when run directly from PVE (over SSH or physical console)?